You've really got to read that User Manual, which comes with your test
results! MLE is the "Most Likely Estimate" of your ancestral
percentages. It's represented by the Red Dot on your triangle chart.
Your triangle chart sounds like the typical one, with confidence
intervals (the gray, blue and yellow contours) that show your possible
real minor ancestral percentages to lie anywhere from 0 to about 30%,
with the number of possible values at 0% equalling all other possible
values. In other words, you can't tell anything of genealogical
importance by it.